That is a bit worrying to hear that one pool has 70% of hashing power. So long as the pool stays honest then it is OK, but it's not a great situation to be in.
I would encourage miners of that pool to go elsewhere until it gets to 40% or below. If you've got > 1Mh and are planning on mining for several days, then mine solo.
Look at the stats I don't cheat anyone everyone is getting paid and they love the pool
With 70% hashing power you could easily ignore every block mined outside the pool, and just build your own chain amongst the pool. It will always outpace the other 30% so you would orphan every block mined by solo miners or other pools. This would ensure your pool gets 100% of the 500 MEC blocks and also would minimise the difficulty level for your pool since the other 30% hash power would not contribute towards difficulty. Then people would have a choice to either join your pool if they want to mine, or abandon the coin. At that point you basically control the network.
My assumption is that you are good and wouldn't cheat anyone and want MEC to do well - I'm just pointing out that it's an unhealthy situation from a robustness perspective.
